CVE-2020-3370 : What You Need to Know

A vulnerability in URL filtering of Cisco Content Security Management Appliance (SMA) could allow an unauthenticated, remote attacker to bypass URL filtering on an affected device. The vulnerability is due to insufficient input validation, enabling an attacker to redirect users to malicious sites.

Understanding CVE-2020-3370

This CVE involves a security flaw in Cisco Content Security Management Appliance (SMA) that could be exploited by attackers to bypass URL filtering mechanisms.

What is CVE-2020-3370?

The vulnerability allows remote attackers to circumvent URL filtering on affected devices by sending crafted HTTP requests, potentially leading to user redirection to malicious websites.

The Impact of CVE-2020-3370

The vulnerability poses a medium severity risk with a CVSS base score of 4.0. While it does not impact availability, it can compromise the integrity of affected systems.

Technical Details of CVE-2020-3370

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The flaw in URL filtering of Cisco Content Security Management Appliance (SMA) results from inadequate input validation, enabling attackers to manipulate HTTP requests.

Affected Systems and Versions

Product: Cisco Email Security Appliance (ESA)
Vendor: Cisco
Version: Not applicable (n/a)

Exploitation Mechanism

Attackers exploit the vulnerability by sending maliciously crafted HTTP requests to affected devices, allowing them to bypass URL filtering and redirect users to malicious sites.

Mitigation and Prevention

Protecting systems from CVE-2020-3370 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-recommended security patches promptly.
Monitor network traffic for any suspicious activity.
Implement strong firewall rules to restrict unauthorized access.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Conduct security audits and penetration testing to identify vulnerabilities.
Educate users on safe browsing practices and phishing awareness.

Patching and Updates

Ensure timely installation of security patches provided by Cisco to address the vulnerability.